I don't know Anna. I suspect that the video confession was well after the initial "confessions", i.e., on or around 7 October - that seems to be the only reliable reference for the moment.
Leandro doesn't mention a date (but if he was the only one to have a key, it was presumably after Leonor had been held on remand). The SC ruling doesn't appear to mention a date, either.
This info is already on here somewhere, but this is a data collection from sep on to may. I haven't got a link sorry. If I can find more already on here I will add.
Day 12: Joana Cipriano, eight years ago, is seen, for the last time, near the church of Figueira, Portimao. GNR starts searching.
Day 16: the Disappearance of the child is participated to Interpol. PJ the puts the chance of crime and strengthens the means in the field.
Day 22: Forensic Laboratory collects blood and hair of Joanna in the house. IS interrogated John Cipriano, uncle of the child.
Mother and uncle are arrested on charges of murder. On day 24, the Court of Portimao ordains the preventive detention for Leonor and loose John Cyprian. Mother confesses to having killed the daughter accidentally.
Day 26: John Cyprian confesses to having been him to kill Joana. Is remanded in custody.OCTOBER
Day 21: PJ passes eight hours rummaging among the casa Da Figueira, where collected objects and clothing of Joana.
NOVEMBER
Day 11: Exams made to traces of blood found in the house of Joana reveal themselves inconclusive.
Day 21: are found pieces of fabric and hair in a pigsty. PJ puts the hypothesis of the body of joana have been thrown to the site.
January 2005
Leonor says-if damaged by PJ. Antonio Leandro, stepfather of joana, consists accused.
MARCH
Day 12: Six months after the disappearance of Joana prevails the thesis of murder.
MAY Day 2005
3: MP deduces the indictment against Leonor and John Cyprian by crimes of murder qualified,
desecration and concealment of corpse.